a/an的用法 — 英语填空题
题目
用 a 或 an 填空（每空一词）。Look at the cool jobs! My uncle is 1.___ firefighter. He is brave. My aunt is 2.___ English teacher. She works in a school. My dream job is to be 3.___ artist, because I like drawing. My friend Amy wants to be 4.___ astronaut. That sounds cool!